# MOLE-O!.  M  12345678 12345678  O  12345678 12345678  910111213141516 910111213141516  L  12345678 12345678  E  12345678 12345678.

## Presentation on theme: "MOLE-O!.  M  12345678 12345678  O  12345678 12345678  910111213141516 910111213141516  L  12345678 12345678  E  12345678 12345678."— Presentation transcript:

MOLE-O!

 M  12345678 12345678  O  12345678 12345678  910111213141516 910111213141516  L  12345678 12345678  E  12345678 12345678

M–1 Question  If your empirical formula is CH 3 and your molar mass is 45.0 g/mole, what is your molecular formula?  Answer Answer

M-2 Question  If your empirical formula is CH 2 and your molar mass is 28.0 g/mole, what is your molecular formula?  Answer Answer

M-3 Question  If your empirical formula is CH 2 O and your molar mass is 360.0 g/mole, what is your molecular formula?  Answer Answer

M-4 Question  If your empirical formula is CH 3 and your molar mass is 60.0 g/mole, what is your molecular formula?  Answer Answer

M-5 Question  If your empirical formula is CH 2 and your molar mass is 42.0 g/mole, what is your molecular formula?  Answer Answer

M-6 Question  If your empirical formula is CH 2 O and your molar mass is 180.0 g/mole, what is your molecular formula?  Answer Answer

M-7 Question  If your empirical formula is CH 3 and your molar mass is 30.0 g/mole, what is your molecular formula?  Answer Answer

M-8 Question  If your empirical formula is CH 2 O and your molar mass is 90.0 g/mole, what is your molecular formula?  Answer Answer

O-1 Question  What is the volume (in L) of 52.0 grams of NH 3 at STP?  Answer Answer

O-2 Question  How many formula units are contained in 0.285 grams of potassium hydroxide?  Answer Answer

O-3 Question  You have 8.3 X 10 8 atoms of zinc. How many moles is this?  Answer Answer

O-4 Question  What is the molar mass of calcium nitrate?  Answer Answer

O-5 Question  What is the molar mass of copper (II) nitrate?  Answer Answer

O-6 Question  You have 264 grams of sodium hydroxide. How many moles is this?  Answer Answer

O-7 Question  You have 1.2 grams of sodium. How many atoms is this?  Answer Answer

O-8 Question  What is the volume (in L) of 4,260 atoms of Neon at STP?  Answer Answer

O-9 Question  What is the volume (in L) of 0.847 grams of carbon dioxide at STP?  Answer Answer

O-10 Question  What is the mass (in grams) of 0.035 moles of chromium (II) chloride?  Answer Answer

O-11 Question  What is the mass (in grams) of 1.74 X 10 16 formula units of sodium hydroxide?  Answer Answer

O-12 Question  How many molecules are contained in 26 grams of water?  Answer Answer

O-13 Question  What is the mass of 3 atoms of helium?  Answer Answer

O-14 Question  What is the volume (in L) of 56.27 grams of nitrogen dioxide at STP?  Answer Answer

O-15 Question  What is the mass of 3,720 molecules of O 2 gas?  Answer Answer

O-16 Question  What is the mass (in grams) of 263 L of dinitrogen pentoxide at STP?  Answer Answer

L-1 Question  A 1.023 gram sample of hydrated copper (II) sulfate, CuSO 4 X H 2 O, is heated to remove all the water and produce 0.653 grams of the anhydrous salt. What is the value of “X?” AnswerAnswer

L-2 Question  What is the percent water in copper (II) nitrate trihydrate?  Answer Answer

L-3 Question  What is the percent water in nickel (II) chloride hexahydrate?  Answer Answer

L-4 Question  Hydrated calcium sulfate, CaSO 4 X H 2 O, contains 20.93% water. What is the value of “X?”  Answer Answer

L-5 Question  Borax powder has the formula Na 2 B 4 O 7 X H 2 O. When 2.145 grams of the hydrate are heated and the water is removed, 1.130 grams of anhydrous salt remain. What is the value of “X?”AnswerAnswer

L-6 Question  What is the percent water in magnesium nitrate hexahydrate?  Answer Answer

L-7 Question  What is the percent water in barium chloride dihydrate?  Answer Answer

L-8 Question  If 1.687 grams of epsom salt, MgSO 4 X H 2 O, is heat to remove all water, 0.824 grams of salt remain. What is the value of “X?”  Answer Answer

E-1 Question  What is the percent lead in lead (II) chloride?  Answer Answer

E-2 Question  What is the percent potassium in potassium dichromate?  Answer Answer

E-3 Question  What is the empirical formula of a compound composed of 77.7% iron and 22.3% oxygen?  Answer Answer

E-4 Question  What is the empirical formula of a compound composed of 44.0% iron and 56.0% chlorine?  Answer Answer

E-5 Question  What is the empirical formula of a compound composed of 34.4% iron and 65.6% chlorine?  Answer Answer

E-6 Question  What is the percent sulfur in iron (II) sulfide?  Answer Answer

E-7 Question  What is the percent sodium in sodium sulfate?  Answer Answer

E-8 Question  What is the empirical formula of a compound composed of 69.9% iron and 30.1% oxygen?  Answer Answer

M-3 Answer  C 12 H 24 O 12

M-4 Answer  C 4 H 12

M-6 Answer  C 6 H 12 O 6

O-1 Answer  68.5 L NH 3

O-2 Answer  3.06 x 10 21 formula units KOH

O-3 Answer  1.14 x 10 -15 moles Zn

O-4 Answer  164.1 g/mole Ca(NO 3 ) 2

O-5 Answer  187.5 g/mole Cu(NO 3 ) 2

O-6 Answer  6.6 moles NaOH

O-7 Answer  3.1 x 10 22 atoms Na

O-8 Answer  1.59 x 10 -19 L Ne

O-9 Answer  0.431 L CO 2

O-10 Answer  4.3 grams CrCl 2

O-11 Answer  1.16 x 10 -6 grams NaOH

O-12 Answer  8.7 x 10 23 molecules H 2 O

O-13 Answer  1.99 x 10 -23 grams He

O-14 Answer  27.4 L NO 2

O-15 Answer  1.98 x 10 -19 grams O 2

O-16 Answer  1,268 grams N 2 O 5

L-1 Answer  22.4% H 2 O

L-2 Answer  22.4% H 2 O

L-3 Answer  45.4% H 2 O

L-4 Answer  CaSO 42H 2 O

L-5 Answer  Na 2 B 4 O 710H 2 O

L-6 Answer  42.1% H 2 O

L-7 Answer  14.7% H 2 O

L-8 Answer  MgSO 47H 2 O

E-1 Answer  74.48% Pb

E-2 Answer  26.58% K

E-3 Answer  FeO

E-4 Answer  FeCl 2

E-5 Answer  FeCl 3

E-6 Answer  36.52% S

E-7 Answer  32.37% Na

E-8 Answer  Fe 2 O 3

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